ASTROSAT CZTI

Data Quality Report

Orbit 17650

Creation date: 2024-06-27T17:39:07.650931
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A05_118T02_9000002612_17650cztM0_level2.evt modeM0/AS1A05_118T02_9000002612_17650cztM0_level2_quad_clean.evt
Size (bytes)746,110,08071,308,800
Size711.5 MB 68.0 MB
Events in quadrant A3,416,572447,155
Events in quadrant B3,605,008449,093
Events in quadrant C4,052,891431,482
Events in quadrant D11,032,477327,332

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148571
B0153581
C0166691
D0377131

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7228330.456558%
B7229781.078987%
C72291001.383317%
D7229287239.728870%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7684 7229 0 0 0.00% 0.00%
B 7685 7230 28 28 0.36% 0.39%
C 7685 7229 1 1 0.01% 0.01%
D 7685 7230 2686 2686 34.95% 37.15%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 14 237 69968 390.23 871 853 177.1
A 0 226 7520 37.64 871 853 177.1
A 3 137 6606 32.48 871 853 177.1
B 7 220 127473 762.73 862 842 166.0
B 4 216 31180 182.73 862 842 166.0
B 4 80 22692 131.61 862 842 166.0
C 3 233 669322 3433.64 829 836 194.7
C 14 238 126296 644.42 829 836 194.7
C 5 218 12277 58.77 829 836 194.7
D 1 52 8099364 45156.59 717 691 179.3
D 13 189 103762 574.7 717 691 179.3
D 12 233 66273 365.67 717 691 179.3

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter